US5613450A - Mobile folding stage - Google Patents

Mobile folding stage Download PDF

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Publication number
US5613450A
US5613450A US08/337,254 US33725494A US5613450A US 5613450 A US5613450 A US 5613450A US 33725494 A US33725494 A US 33725494A US 5613450 A US5613450 A US 5613450A
Authority
US
United States
Prior art keywords
stage
decks
frame
support legs
folding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/337,254
Other languages
English (en)
Inventor
Walter R. Wagner
Richard C. Bue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sico Inc
Original Assignee
Sico Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23319773&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US5613450(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sico Inc filed Critical Sico Inc
Priority to US08/337,254 priority Critical patent/US5613450A/en
Assigned to SICO INCORPORATED reassignment SICO INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUE, RICHARD C., WAGNER, WALTER R.
Priority to JP31167795A priority patent/JP3776154B2/ja
Priority to CN95196021.0A priority patent/CN1115455C/zh
Priority to NZ296859A priority patent/NZ296859A/xx
Priority to PCT/US1995/014805 priority patent/WO1996015345A1/en
Priority to CA 2203698 priority patent/CA2203698C/en
Priority to DE69517047T priority patent/DE69517047T2/de
Priority to EP95939950A priority patent/EP0791122B1/de
Priority to JP8516283A priority patent/JPH10510016A/ja
Priority to BR9509628A priority patent/BR9509628A/pt
Priority to ES95939950T priority patent/ES2148583T3/es
Priority to AU41587/96A priority patent/AU686487B2/en
Priority to KR1019970703153A priority patent/KR100383659B1/ko
Priority to EP98118714A priority patent/EP0890691A3/de
Priority to HK98101146.4A priority patent/HK1002771B/en
Publication of US5613450A publication Critical patent/US5613450A/en
Application granted granted Critical
Priority to MXPA/A/1997/003427A priority patent/MXPA97003427A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
    • E04H3/10—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons for meetings, entertainments, or sports
    • E04H3/22—Theatres; Concert halls; Studios for broadcasting, cinematography, television or similar purposes
    • E04H3/24—Constructional features of stages
    • E04H3/28—Shiftable or portable platforms

Definitions

  • the present invention relates to mobile elevationally adjustable folding stages which fold between a storage position and a use position.
  • Folding stages are used for a variety of purposes to provide a temporary raised platform for use in schools, hotels, convention centers and other institutions wherein multiple use facilities require the capability of setting up temporary stages.
  • Such stages are made up of individual stage structures which are positioned adjacent each other to form extended stage surface. When not in use, the individual stage structures may be folded to compact dimensions and stored.
  • Stages which are used for forming an elevated platform at lower heights typically ranging between stages having a minimum height of 16 inches and adjusting in increments of 6 or 8 inches, up to stages having a maximum height of 48 inches with lower height increments of 6 or 8 inches, generally fold at their center with a pair of stage decks having upper surfaces folding adjacent each other in a nearly vertical storage position.
  • the folding linkage facilitates folding from a use position to the storage position.
  • Support legs may fold inward to be substantially flush against the underside of the stage decks. When folded, the stages are supported on rollers or casters for moving between locations.
  • stages typically are only able to adjust between two heights due to the complexity of folding to a vertical position with the legs folding proximate the underside of the stage decks as well as unfolding with complicated bracing and maintaining the support from the legs.
  • the inner support legs may use a short set and long set of legs for the two heights, with the short legs not foldable.
  • the linkages often do not maintain the decks so that they properly align when in the use position.
  • excessive loads pressed at the hinge point in the center of the two decks when in the unfolded position may cause the outer ends of the stage to lift.
  • the stage when the stage is folded in a substantially vertical position, the tops of the decks may come into contact with one another, having the potential to pinch users' hands or fingers.
  • a new and improved folding stage is needed which folds from a use position to a folded position with the tops of the decks substantially facing one another.
  • a linkage is needed which controls the motion of the decks and provides proper alignment.
  • the linkage should resist accidental folding and provides sufficient support for the legs so that greater loads may be applied.
  • the linkage should provide for legs which can extend to three different heights rather than only two. The present invention addresses these as well as other problems related to folding stages.
  • a mobile folding stage has a pair of stage decks which are joined along a center axis to form a stage surface.
  • the stage folds from a use position to a folded position wherein the stage decks are at a substantially vertical position with the upper surfaces of the decks facing one another.
  • the stage includes a folding framework connected to a caster frame mounted on rollers or casters for moving the stage from location to location.
  • the stage includes a folding linkage which folds a framework and the stage decks from their horizontal use position to the nearly vertically folded storage position.
  • the linkage connects to outer support legs which are folded between the use and non-use positions with actuating of the linkage.
  • Inner legs fold to an extended position to provide additional support and to act as a pivot for the stage when folding between the folded position and the use position.
  • Both the inner and outer legs are elevationally adjustable for changing the height of the stage.
  • Each inner leg includes a foot having an angled portion which supports and guides the inner leg and the stage during the folding and unfolding operations.
  • the inner legs also have guide brackets which engage an angled portion of the caster frame to direct the legs to their fully extended use positions. When the stage is folded, the inner and outer legs both lie substantially flat against the bottom of the stage decks.
  • the actuating linkage for folding includes a main mounting plate having raised end portions and a raised center portion.
  • a substantially U-shaped link mounts from the raised center portion of the linkage mounting plate to the frame while a shortened link mounts from the end portion of the mounting plate to the frame.
  • An extended link mounts from the linkage mounting plate to the outer leg to actuate folding the leg along with the folding of the stage.
  • the substantially U-shaped link has a slight bevel at the top of the cross portion which receives the edge of the deck when in the folded position to angle the decks slightly toward one another. This resists accidental unfolding, but keeps a space between the upper edges of the decks so that users' hands and fingers cannot get pinched between the decks. Alignment pins on the edge of the decks also align with the corresponding bores on the opposite deck to guide alignment when in the use position.
  • the stage decks may be either permanently mounted or may be interchangeable or reversible.
  • a spring engages a bore in one corner of the deck to slightly raise the corner of the decks when they are being removed or reversed. This provides for gripping one corner of the deck and easy reversal of the decks.
  • FIG. 1 shows a perspective view of a mobile folding stage in the folded position, according to the principles of the present invention
  • FIG. 2 shows a perspective view of the stage shown in FIG. 1 in the unfolded position with stairs attached;
  • FIG. 3 shows a perspective view of the stage shown in FIG. 1 partially unfolded
  • FIG. 4 shows a perspective view of the stage shown in FIG. 1 with the stage unfolded so that the inner legs are engaging the ground;
  • FIG. 5 shows a perspective view of the stage shown in FIG. 1 folded so that the stage is pivoting on its inner legs;
  • FIG. 6 shows a perspective view of the stage shown in FIG. 1 in a nearly unfolded position
  • FIG. 7 shows a perspective view of the stage shown in FIG. 1 with the stage unfolded
  • FIG. 8 shows a perspective view of the stage shown in FIG. 7 in a partially folded position
  • FIG. 9 shows a perspective view of the stage shown in FIG. 7 in a nearly folded position
  • FIG. 10 shows a side elevational view of the folding linkage for the stage shown in FIG. 1 in the folded position
  • FIG. 11 shows a side elevational view of the folding linkage shown in FIG. 10 in the unfolded position
  • FIG. 12 shows an internal perspective view of the inner support legs and linkage
  • FIG. 13 shows a perspective view of the inner leg and guide bracket engaging the caster frame to direct the leg to an unfolded position
  • FIG. 14 shows a side elevational view of the outer leg and linkage for the stage shown in FIG. 1;
  • FIG. 15 shows a perspective view of a mounting spring for the deck connectors for the stage shown in FIG. 1, and,
  • FIG. 16 shows a perspective view of a deck being raised at one corner by the spring shown in FIG. 15.
  • the stage 20 includes a folding frame 22 supporting a pair of decks 24. As shown in FIG. 1, in a folded storage position, the decks 24 are positioned just past vertical with upper faces of the decks 24 opposing one another. As shown in FIG. 2, when the stage 20 is unfolded, the decks 24 form an extended planar stage surface.
  • the stage 20 is supported on inner legs 32 and outer legs 34 which extend to a support position as shown in FIG. 2. When the stage 20 is folded, as shown in FIG. 1, the inner legs 32 and outer legs 34 fold to a position lying substantially flat against the lower surfaces of the stage decks 24.
  • the stage 20 is rolled on casters or rollers 26 which are mounted on a caster frame 38.
  • the caster frame 38 has a center cross member running substantially along the folding axis of the stage 20 and end members extending substantially perpendicular to the center axial member. End portions 40 of the perpendicular members are angled slightly inward from the edge of the stage to aid in alignment of the inner legs 32 during unfolding, as explained hereinafter.
  • the decks 24 may be permanently attached to the folding frame 22 or may be reversible or removable to provide a variety of deck surfaces for different uses.
  • the decks 24 and frame 22 are configured with attachment members 90, as shown most clearly in FIGS. 14 and 15, which provide for attaching to other similar stages or for decks 24 being supported between stages 20 for forming an expanded extended stage surface with fewer stages.
  • Curtains or other decorative accessories may be hung from a mounting strip 92 along the edge of the decks 24.
  • removable stairs 36 may be mounted to an edge of the stage 20 to provide easier access to the stage.
  • guard rails and other safety equipment may also be mounted to provide greater flexibility for configuring the stage 20.
  • the outer legs 34 include a telescoping leg portion 56 and outer leg member 58.
  • the telescoping member 56 includes height adjustment holes 62 which engage a spring loaded pin 68 having a handle attached thereto. A pin 68 inserts into the hole 62 to maintain the leg 34 at a desired height.
  • each of the outer support legs 34 has three different adjustment holes 62 for maintaining the stage 20 at one of three different heights.
  • the legs 34 include spacers 60 having a substantially rectangular configuration extending between the outer leg member 58 and the telescoping member 56 to provide easy sliding between the members 56 and 58 and to provide solid support with little relative movement between the outer member 58 and telescoping inner member 56.
  • each of the outer legs 34 includes a strut 64 which connects to the folding linkage 30, as explained hereinafter.
  • a cross member 42 extends between the pair of the outer legs 34 on the underside of each deck 24.
  • the legs pivot on a mounting plate 126 which provides for direct support to the frame 22 by the framework on the outer legs 34 when in the use position.
  • the inner support legs 32 include an outer member 46 and an inner telescoping member 44 for varying the height of the inner legs 32.
  • the telescoping member 44 includes height adjustment holes 50 which receive a spring loaded pin 66 which inserts into the height adjustment holes 50 to maintain the telescoping member 44 at a desired height.
  • Rectangular spacers 48 insert between the outer member 46 and the telescoping member 44 for providing easy sliding between the members while also providing increased support and stability to the inner legs 32.
  • the inner legs 32 pivot about a bracket 124 mounting to the frame 22. When in the extended position, the inner legs 32 carry the load directly from the frame 22 through the legs 32.
  • the inner legs 32 support the decks 24 and the entire stage 20 during folding and unfolding, the inner legs 32 include feet 70 which are configured for aiding and supporting the legs 32 and stage 20 during folding and unfolding, as explained hereinafter.
  • Each of the feet 70 includes a flat bottom portion 72 and an inner angled portion 74 which extends at a substantially 45° angle upward from the bottom portion 72 in the preferred embodiment and then extends upward at a second 45° bend.
  • the feet 70 include an angled outer portion 76 extending away from the folding axis of the stage 20. In the preferred embodiment, the outer portion 76 is angled at a 45° angle from the bottom portion 72.
  • the configuration of the feet 70 provides for pivoting while also maintaining an increased contact area between the feet 70 and the ground.
  • the feet 70 act as skids allowing for some sliding to take place during folding and unfolding the stage 20.
  • the folding linkage 30 provides for folding of the stage decks 24 from a flat use position to a folded storage position.
  • the linkage 30 includes a main linkage mounting plate 100 at each end of the decks which attaches to end members of the caster frame 38.
  • the linkage mounting plate 100 includes raised end portions 102 which extend vertically upward at each end of the mounting plate 100.
  • a raised center portion 104 is positioned intermediate the end portions 102. Therefor, each end portion 102 forms a channel with the center portion 104 which supports ends of the decks 24 when in the folded position.
  • the linkage 30 further includes a substantially horseshoe shaped link 108 which mounts from a pivot point 128 at the center portion 104 of the main plate 100.
  • the U-shaped link 108 includes a first side portion 110 and a second side portion 112 connected by an angled bottom portion 114.
  • the bottom portion 114 includes a beveled upper surface which receives and supports the edge of the deck 24 when the stage 20 is folded.
  • the bevel of the bottom portion 114 tilts the stage deck 24 slightly past vertical toward the center axis to aid in resisting accidental unfolding of the stage 20 when in the folded position.
  • the first side portion 110 mounts to the mounting bracket 124 on the frame 22 at pivot point 128.
  • a short link 106 mounts to the mounting bracket 124 at pivot point 122 and also to the end portion 102 of the main plate at a pivot point 118.
  • An extended link 116 which jogs toward the frame to lie substantially flat against the bottom of the deck 124 in the folded position extends to the strut 64 on the outer leg 34 as shown in FIG. 14.
  • the extended link 116 mounts at a pivot point 120 at an outer position of the end portion 102.
  • the decks 24 include pins 140 engaging corresponding bores along the inner edges of the decks 24 to guide and align the decks along the center axis.
  • the linkage 30 folds the stage deck 24 and outer legs 34 from a folded position as shown in FIG. 1 to a use position, as shown in FIG. 2, and then back to a folded position.
  • the linkage 30 provides for greater stability so that when in the use position, a load placed at the direct center of the stage 20 cannot cause the decks 24 to fold up.
  • the linkage provides for slightly raising the inner edges of the decks 24 when folding the stage 20 so that the decks 24 have room to fold and unfold without binding upon one another or the linkage 30.
  • the linkage 30 is designed so that the stage decks 24 are in a just past vertical position when folded, so that they resist accidental unfolding, yet are spaced slightly apart at their top edge so that operators' and users' hands will not be pinched between the tops of the decks 24. Furthermore, the linkage 30 also folds the outer legs 34 from a folded position to an extended position wherein they are directly supporting the stage frame 22. The linkage 30 actuates the outer legs 34 so that the outer legs 34 are substantially flat against the bottom of the decks 24 when folded and so that the extended link 116 is also substantially flat against the deck 24 when folded with only end portions extending to engage the linkage 30.
  • FIGS. 1 and 3-7 The operation of unfolding the stage is shown in FIGS. 1 and 3-7.
  • the decks 24 are substantially vertical and extending slightly towards one another.
  • the legs 32 and 34 are typically in a folded position stored flat against the bottom of the decks 24.
  • the stage 20 is supported on the casters 26 and may be easily rolled to a desired location.
  • the outer legs 34 are pulled outward away from the bottoms of the decks 24, as shown in FIG. 3.
  • the linkage 30 passes through a toggle point, so that the legs 34 slightly "snap" outward with the linkage 30 and the extended links 116 also move slightly outward from the bottoms of the decks 24.
  • the inner legs 32 are folded outward to their fully extended position, as also shown in FIG. 3.
  • the inner portion 74 has its angled surface substantially flat against the floor.
  • the outer legs 34 become slightly more extended.
  • the stage 20 pivots about the bend between the bottom portion 72 and the angled inner portion 74 of the feet 70.
  • the caster frame 38 and the casters 26 are lifted upward so that the casters 26 are no longer engaging the floor and the stage 20 is supported entirely on the inner legs 32.
  • the linkage 30 also extends the outer legs 34 slightly more, as shown in FIG. 5.
  • the inner edges of the decks 24 are also moved slightly closer to facing one another.
  • the inner legs 32 are substantially supported on the bottom portion 72 of the feet 70.
  • the outer legs 34 are almost entirely perpendicular to the stage decks 24 and the inner edges of the decks 24 substantially face one another. With further folding, the edges of the decks 24 entirely face one another and engage with alignment pins 140 engaging opposed complimentary bores 142 along the inner edges of the decks 24, as shown in FIG. 11.
  • the load is supported directly through the inner and outer legs 32 and 34 for increased stability and support.
  • the steps are substantially reversed with some slight variations.
  • the stage decks 24 As shown in FIG. 8, as the stage decks 24 are lifted towards one another, the stage 20 will be supported on the feet 70 and substantially on the inner portions of the feet 74.
  • One deck 24 will typically be lowered before the other so that at least one set of the casters 26 engages the ground.
  • the second deck 24 will be folded so that both sets of casters 26 will engage the ground.
  • One deck 24 is lifted upward, as shown in FIG. 9, to the substantially folded position. Then the second deck 24 can be folded upwards so that both decks are substantially folded, as shown in FIG. 3.
  • the legs 32 and 34 are then refolded to the original storage position, shown in FIG. 1.
  • the inner leg 32 when the stage is unfolded, the inner leg 32 includes a support member 54 which substantially rests against the perpendicular end portion of the caster frame 38. This provides increased stability and directs the load substantially through the leg 32.
  • a guide bracket 52 On an inner portion of the inner legs 32 there is mounted a guide bracket 52. As shown in FIG. 13, the guide bracket has a curved profile which may engage the bent end portions 40 of the caster frame 38 if the inner leg 32 is not fully unfolded or is misaligned while unfolding the stage 20.
  • the guide bracket 52 will engage the angled end portions of the caster frame 40 and move the leg 32 outward toward its proper support position for supporting the stage 20. It can be appreciated that as the stage 20 is unfolded more, the guide bracket 52 pushes the leg 32 outward along the angled portion 40 so that it is forced into its extended support position perpendicular to the deck 24. In this manner, the guide bracket 52 and the angled end portion 40 of the caster frame 38 guide and align the inner legs 32.
  • the attachment system for supporting the decks 24 to the frame 22 is shown in FIGS. 15 and 16.
  • the decks 24 include orifices along their lower portion which are hidden beneath a captive nut 82, as shown most clearly in FIG. 14.
  • the captive nut 82 connects to a bolt 86 attaching through the orifices in the bottom of the deck 24.
  • a spring 80 will be placed to help raise the decks when removing or flipping the deck members 24.
  • the spring 80 helps to raise one corner of the decks 24, as shown in FIG. 16.
  • the spring 80 forces the one corner of the deck 24 upward so that it may be grabbed by the fingers, allowing easier lifting of the remaining corners of the deck 24. In this manner, the decks 24 may be more easily removed and with less chance of fingers being pinched while trying to lift the decks 24.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Multimedia (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Legs For Furniture In General (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
  • Handcart (AREA)
  • Ladders (AREA)
  • Movable Scaffolding (AREA)
US08/337,254 1994-11-10 1994-11-10 Mobile folding stage Expired - Lifetime US5613450A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
US08/337,254 US5613450A (en) 1994-11-10 1994-11-10 Mobile folding stage
JP31167795A JP3776154B2 (ja) 1994-11-10 1995-11-07 移動式の折畳ステージ
HK98101146.4A HK1002771B (en) 1994-11-10 1995-11-13 Mobile folding stage
EP95939950A EP0791122B1 (de) 1994-11-10 1995-11-13 Faltbare bühne
AU41587/96A AU686487B2 (en) 1994-11-10 1995-11-13 Mobile folding stage
PCT/US1995/014805 WO1996015345A1 (en) 1994-11-10 1995-11-13 Mobile folding stage
CA 2203698 CA2203698C (en) 1994-11-10 1995-11-13 Mobile folding stage
DE69517047T DE69517047T2 (de) 1994-11-10 1995-11-13 Faltbare bühne
CN95196021.0A CN1115455C (zh) 1994-11-10 1995-11-13 可移动的折叠台
JP8516283A JPH10510016A (ja) 1994-11-10 1995-11-13 可動式折り畳み型ステージ
BR9509628A BR9509628A (pt) 1994-11-10 1995-11-13 Palco dobravel móvel
ES95939950T ES2148583T3 (es) 1994-11-10 1995-11-13 Escenario movil plegable.
NZ296859A NZ296859A (en) 1994-11-10 1995-11-13 Mobile foldinig stage
KR1019970703153A KR100383659B1 (ko) 1994-11-10 1995-11-13 이동 가능한 접철식 스테이지
EP98118714A EP0890691A3 (de) 1994-11-10 1995-11-13 Faltbare Bühne
MXPA/A/1997/003427A MXPA97003427A (en) 1994-11-10 1997-05-09 Stripping folding mo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/337,254 US5613450A (en) 1994-11-10 1994-11-10 Mobile folding stage

Publications (1)

Publication Number Publication Date
US5613450A true US5613450A (en) 1997-03-25

Family

ID=23319773

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/337,254 Expired - Lifetime US5613450A (en) 1994-11-10 1994-11-10 Mobile folding stage

Country Status (11)

Country Link
US (1) US5613450A (de)
EP (2) EP0791122B1 (de)
JP (2) JP3776154B2 (de)
KR (1) KR100383659B1 (de)
CN (1) CN1115455C (de)
AU (1) AU686487B2 (de)
BR (1) BR9509628A (de)
DE (1) DE69517047T2 (de)
ES (1) ES2148583T3 (de)
NZ (1) NZ296859A (de)
WO (1) WO1996015345A1 (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998059134A2 (en) 1997-06-20 1998-12-30 Sico Incorporated Tri-height folding stage
US6006680A (en) * 1997-11-18 1999-12-28 Wenger Corporation Portable stage assembly
US6061970A (en) * 1997-09-30 2000-05-16 Fujita; Kazuo Electrically operated multiple folding stage system
US6082051A (en) * 1998-07-23 2000-07-04 Sico Incorporated Folding stage
US6164016A (en) * 1997-08-01 2000-12-26 Sico Incorporated Deck connector
US6195943B1 (en) * 1997-02-18 2001-03-06 Ezistage Pty Ltd. Collapsible stage or like structure
USD456155S1 (en) 2001-06-11 2002-04-30 Biofit Engineered Products Oval shaped cafeteria table
US6645096B1 (en) 2002-10-24 2003-11-11 Sportcraft, Ltd Foldable table tennis table
WO2007057419A1 (en) * 2005-11-16 2007-05-24 De' Longhi Spa Apparatus for ironing
US7584575B2 (en) * 2003-07-18 2009-09-08 Stageright Corporation Variable height fold and roll staging and method of assembling same
US20120073421A1 (en) * 2010-09-23 2012-03-29 Anthony Ramirez UCR (user configurable riser)
US8215063B1 (en) 2008-09-16 2012-07-10 biljax, inc. Guard rail lock assembly
US20130299648A1 (en) * 2011-03-31 2013-11-14 Viroj Khanampornpan Stand
US9907394B2 (en) * 2015-08-07 2018-03-06 Zenithen Usa Llc Folding table
US9972293B1 (en) * 2017-06-29 2018-05-15 Kent Edward Keller Modular portable riser apparatus
US20180355629A1 (en) * 2017-06-09 2018-12-13 Sico Incorporated Portable stage system
US11242691B2 (en) * 2019-05-27 2022-02-08 Steven Williams Collapsible mobile stage system

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Publication number Priority date Publication date Assignee Title
KR101065112B1 (ko) 2011-05-20 2011-09-16 상욱 김 스테이지 설치용 프레임 구조물
KR101353070B1 (ko) * 2013-05-08 2014-01-17 에디슨이엔지(주) 이동보관이 가능한 접이식 롤러 작업대
CN106285069A (zh) * 2016-10-21 2017-01-04 安徽饰界广告有限公司 一种新型舞台
CN109747298A (zh) * 2017-11-01 2019-05-14 辽宁泓新科技成果转化服务有限公司 一种易携带的野外教学装置及其使用方法
CN108149962A (zh) * 2017-12-26 2018-06-12 合肥饰界金属制品有限公司 一种舞台
CN108868209A (zh) * 2018-06-21 2018-11-23 中建城市建设发展有限公司 一种可移动折叠式宣讲台及其使用方法
CN117420265A (zh) * 2023-10-11 2024-01-19 广西壮族自治区农业科学院 一种田间植物叶片采集测试平台及其使用方法

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US6195943B1 (en) * 1997-02-18 2001-03-06 Ezistage Pty Ltd. Collapsible stage or like structure
WO1998059134A2 (en) 1997-06-20 1998-12-30 Sico Incorporated Tri-height folding stage
WO1998059134A3 (en) * 1997-06-20 1999-03-11 Sico Inc Tri-height folding stage
US6024026A (en) * 1997-06-20 2000-02-15 Sico Incorporated Tri-height folding stage
AU745307B2 (en) * 1997-06-20 2002-03-21 Sico Incorporated Tri-height folding stage
US6164016A (en) * 1997-08-01 2000-12-26 Sico Incorporated Deck connector
US6061970A (en) * 1997-09-30 2000-05-16 Fujita; Kazuo Electrically operated multiple folding stage system
US6006680A (en) * 1997-11-18 1999-12-28 Wenger Corporation Portable stage assembly
US6082051A (en) * 1998-07-23 2000-07-04 Sico Incorporated Folding stage
USD456155S1 (en) 2001-06-11 2002-04-30 Biofit Engineered Products Oval shaped cafeteria table
US6645096B1 (en) 2002-10-24 2003-11-11 Sportcraft, Ltd Foldable table tennis table
US7584575B2 (en) * 2003-07-18 2009-09-08 Stageright Corporation Variable height fold and roll staging and method of assembling same
WO2007057419A1 (en) * 2005-11-16 2007-05-24 De' Longhi Spa Apparatus for ironing
US8215063B1 (en) 2008-09-16 2012-07-10 biljax, inc. Guard rail lock assembly
US8479453B1 (en) 2008-09-16 2013-07-09 biljax, inc. Stage frame assembly
US20120073421A1 (en) * 2010-09-23 2012-03-29 Anthony Ramirez UCR (user configurable riser)
US8513509B2 (en) * 2010-09-23 2013-08-20 Anthony Ramirez UCR (user configurable riser)
US20130299648A1 (en) * 2011-03-31 2013-11-14 Viroj Khanampornpan Stand
US9273817B2 (en) * 2011-03-31 2016-03-01 Viroj Khanampornpan Stand
US9907394B2 (en) * 2015-08-07 2018-03-06 Zenithen Usa Llc Folding table
US20180355629A1 (en) * 2017-06-09 2018-12-13 Sico Incorporated Portable stage system
US11060308B2 (en) * 2017-06-09 2021-07-13 Sico, Incorporated Portable stage system
US9972293B1 (en) * 2017-06-29 2018-05-15 Kent Edward Keller Modular portable riser apparatus
US11242691B2 (en) * 2019-05-27 2022-02-08 Steven Williams Collapsible mobile stage system

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AU686487B2 (en) 1998-02-05
MX9703427A (es) 1997-07-31
DE69517047T2 (de) 2000-09-14
ES2148583T3 (es) 2000-10-16
HK1002771A1 (en) 1998-09-18
EP0791122A1 (de) 1997-08-27
AU4158796A (en) 1996-06-06
EP0890691A2 (de) 1999-01-13
CN1115455C (zh) 2003-07-23
JPH10510016A (ja) 1998-09-29
WO1996015345A1 (en) 1996-05-23
EP0890691A3 (de) 1999-03-10
JPH08209961A (ja) 1996-08-13
EP0791122B1 (de) 2000-05-17
KR100383659B1 (ko) 2003-07-22
DE69517047D1 (de) 2000-06-21
NZ296859A (en) 1999-06-29
CN1162344A (zh) 1997-10-15
JP3776154B2 (ja) 2006-05-17

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